ML9211GA View Datasheet(PDF) - Oki Electric Industry
Part Name
Description
MFG CO.
ML9211GA
Oki Electric Industry
'ML9211GA' PDF : 20 Pages View PDF
¡ Semiconductor
ML9211
FUNCTIONAL DESCRIPTION
Power-on Reset
When power is turned on, the ML9211 is initialized by the internal power-on reset circuit.
The status of the internal circuit after initialization is as follows:
• The contents of the shift registers and latches are set to "0".
• The digital dimming duty cycle is set to "0".
• All segment outputs are set to Low level.
• All grid outputs are set to High level.
Data Transfer Method
Data can be transferred between the rising edge and the next falling edge of chip select input.
The mode data, segment data and dimming data are written by a serial transfer method. The
serial data is input to the shift register at the rising edge of a shift clock pulse.
The mode data (M0 to M2) must be transferred after the segment data and dimming data
succeedingly.
When the chip select input falls, an internal LOAD signal is automatically generated and data is
loaded to the latches.
Function Mode
Function mode is selected by the mode data (M0 to M2). The relation between function mode and
mode data is as follows:
FUNCTION MODE
OPERATING MODE
0
Segment Data for GRID1-3 Input
1
Segment Data for GRID1 Input
2
Segment Data for GRID2 Input
3
Segment Data for GRID3 Input
4
Digital Dimming Data Input
FUNCTION DATA
M0 M1 M2
0
0
0
1
0
0
0
1
0
1
1
0
0
0
1
Segment Data Input [Function Mode: 0 to 3]
• ML9211 receives the segment data when function mode 0 to 3 are selected.
• The same segment data is transferred to the 3 segment data latches corresponding to GRID 1
to 3 at the same time when the function mode 0 is selected.
• The segment data is transferred to only one segment data latch corresponding to the specified
GRID when the function mode is 1, 2 or 3 is selected.
• Segment output (SEG1 to 56) becomes High level (lighting) when the segment data (S1 to S56)
is set to "1".
[Data Format]
Input Data
Segment Data
Mode Data
: 59 bits
: 56 bits
: 3 bits
Bit
Input Data
1234
S1 S2 S3 S4
53 54 55 56 57 58 59
S53 S54 S55 S56 M0 M1 M2
Segment Data (56bits)
Mode Data
(3bits)
12/19
Share Link: 